<style>div { position:absolute; width:200px; height:200px; }</style>
<div style="background: radial-gradient(circle farthest-side at 50px 80px, white, black); top:10px; left:10px;"></div>
<div style="background: radial-gradient(farthest-side circle at 150px 80px, white, black); top:10px; left:220px;"></div>
<div style="background: radial-gradient(circle farthest-side at 80px 50px, white, black); top:220px; left:10px;"></div>
<div style="background: radial-gradient(farthest-side circle at 80px 150px, white, black); top:220px; left:220px;"></div>
<div style="background: radial-gradient(farthest-side at 80px 40px, white, black); height:100px; top:430px; left:10px;"></div>
<div style="background: radial-gradient(farthest-side at 120px 60px, white, black); height:100px; top:430px; left:220px;"></div>
<div style="background: radial-gradient(ellipse farthest-side at 40px 80px, white, black); width:100px; top:640px; left:10px;"></div>
<div style="background: radial-gradient(farthest-side ellipse at 60px 120px, white, black); width:100px; top:640px; left:220px;"></div>
